<template>
    <h3>Header</h3>
 </template>
  
 <script>
   
 </script>
 
 <style scoped>
 h3 {
   width: 100%;
   height: 100px;
   border: 5px solid #999;
   text-align: center;
   line-height: 100px;
   box-sizing: border-box;
 }
 </style>